Question about 2004 Ford Taurus

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I just changed the thermostat in my 04 ford Taurus now the heater blows cold air when idile trying to burp the cooling but it won't work what could be wrong

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  • Philobios May 16, 2014

    Hi Amanda Long, I want to help you with your problem, but I need more information from you. Can you please add details in the comment box?
    - was there a problem with the heat prior to changing the thermostat?
    - what was the reason for changing the thermostat?
    - was anything else changed/replaced/repaired at the same time?
    - operating temperature of newly installed thermostat (should be 192 degrees)?
    - clarify if the engine-temperature gauge is at normal operating temperature after idling for at least 5 minutes?
    - have you confirmed that the thermostat is opening and closing at the correct temperatures?

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If applicable, if there's a "jiggle valve" make sure its in the upper position or you'll never burp out all the air in the system

you made sure there's no leaks after the job?

i use a no-spill type funnel with a radiator cap adaptor and raise the front end up so all the air will travel up and out of that point

heater on full blast while engine idling/ running until thermostat opens up ~ then you'll see a drop in coolant level at the no-spill funnel & add fluid as needed

Posted on Mar 23, 2015

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Maybe you must check that your water system haven't got a air lock in the system, if it got a air lock look on top of your head on the water line and look for a bleeding screw loosen it a little bit put some water in the radiator or water bottle start the engine and when the water stat to come out the bleeding screw tighten the screw and fill water up to the right level close the cap and test your system good luck

Posted on Mar 23, 2015

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Check if it is the right temperature range thermostat for your car. All thermostats look the same, but have different temperature ratings. Did you install it backwards? That can sometimes be the problem. (from experience!).

Take the thermostat out of the car and test it. Don't assume that because it is new, it will work. Sometimes sitting on a shelf in a parts dealer's warehouse, it can get "stuck". Take the thermostat out of the car and put it in a bucket. Most thermostats open from about 170 to 180 degrees F. Boiling water is 212 degrees F.

Boil a pot of water, and then pour it into the bucket with the thermostat in it, such that the entire thermostat is under the boiling water. You should see the thermostat valve open. Don't worry, you won't hurt the thermostat. It is actually built to take temperatures higher than boiling water because the car's cooling system is pressurized and so can exceed the boiling point of water, without the water turning to steam.

Posted on May 16, 2014

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1997 ford expedition overheating problem truck warms up fine heat works good then heat goes cold and temp gauge jumps from normal to overheating i have changed the thermostat twice water pump fan clutch...


This might sound like too simple a solution, but after owning 5 expeditions, I think I may have an idea.

It is possible that the cooling system is simply not full of fluid. If, when changing the thermostat twice and other service, the system was not sufficiently bled or burped, this can happen. What happens is that people do these repairs, and then fill the radiator, but fail to completely flush the cooling system. My son had the exact same problem on his Mazda 3 (Mazda was owned by Ford then), and flushing his cooling system solved his problem.

Think of it this way: If your heater works fine, then goes cold, that usually means the heater coils which the air blows over have no hot fluid in them. As for overheating, your thermostat opens when your engine reaches a certain temperature with the intent to exchange the too-hot fluid with water cooled by the radiator, but if there is only air, or insufficient fluid in the engine after the exchange, you will overheat.

Ask your mechanic to flush/burp the cooling system completely. I hope this works.

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OK i have a 92 ford Taurus it is having a over heating problem i have changed the thermostat twice in two weeks its blowing cold air when i turn the heat on so what do i do????


Dd you check for a leak? did you know if the inside heater cooling panel it is connected to the cooling syst. (it seems like be damaged).
In other order the over heating problem could become from bad signal from cooling sensor located closer to the thermostat, did you changed? this sensor sends signal to the computer to starts the cooling fan located at radiator avoiding over heating problems!

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Have the cooling system flushed or remove the hoses from the firewall(when cool) and blow out heater core with compressed air-clogged heater core..

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